Hinged moldboard plow



Aug. 3, 1943. e. M. HORNER r-rrm.

HINGED MOLDBOARD PLOW Filed April 30, 1942 2 Sheets-Sheet l Inventors Glen M. Horner Loy M Naffzmger 1943. G. M. HORNER ET AL 2,326,097

HINGED MOLDBOARD PLOW Filed April 30, 1942 2 Sheets-Sheet 2 INVENTORS GLEN M.HORNER LOY mwAFgmssR BY 3.1m

ATTORNEYS I Patented Aug. 3, 1943 2,326,097 7 YHINGED Motnnoann rtow Glen M. Homer and. LoyM; Naffziger, Pullman,

Wash., assignors to Claude R. Wickard, as Secretary of Agriculture of the United States of- America, and his successors in office I Applidation April 30, 1942, Serial N0. 441,066

3 w 1 Claim.;'(Cl. 9'71l8) K (Granted under the act of March 3, 1883, as

amended April 30,1928; 370 0.-G. 757

This application is made under the act of March 3, 1883, as amended by the actor" April 30, 1928, and the invention herein described and claimed; if patented, maybe manufactured and used by or for the Government of the United States of Americaforl'governmental purposes without the payment to us' of any royalty thereon.

This invention relates to moldboard plows, and; o

J: the general object is the provision of means in combinati-on'with a moldboardof the hinged type forquickly adjusting its position while the plow isin motion. Adjustments of this kind permit 7 regulation of the turning action of the plow for different operating conditions.

Another object of this invention is the provi- Q sion. of such means in combination witha plu- Q rality of moldboard plows attached to a single vehicle. 1 i

arms of these brackets pivotally supportvertical prongs 21, 28 and 29 of a fork 36. A vertical stub shaft 3| is pivotally held in a bearing 32,-which bearing is fixed to orintegral with the frame of the vehicle. Integral-with the bottomof said shaft 31 is an eccentric arm 33 extending downwardly to the bracket 25-of the moldboard -22. The lower endrof the bar 33 is flanged,'and the flanged portion 34 pivotally engages the prong 28.

To the upper end of the shaft 3|, there is fixed one s end of an arm 36,;Which arm extends outward pivoted to the forward end of the vehicle, is connected tothe-outer end of the'arm 36 by; means. of a'link 38 so that when the lever3l is moved ..forward,-- the link 38 pulls the outerend of the Other objects and advantagesof this invention will be apparent from the following description in connection with the accompanying drawings, il-

-lustrating an embodiment ofthis invention in which: i

Fi e-1 is an elevational viewvof the embodi ment attached to a vehicle frame, carrying a plurality of plows, one of which isillustrated'in phantom, the view being at an angle to bring the plane of the plows parallelto the picture'plane.

, Figure 2 is a section along the line 2-2 of Fig jurel.

Figure3isa-plan view. Referring with more particularity to the draw:

ings in which like numerals-designate like par ts, the embodiment is mounted on the frame of a I suitable vehicle ll, supported on wheels l2 and l3, adapted to be drawn by a tractor llshown' fragmentarily.

A plurality of plows I5, [6 and l I are secured to suitable dependent frame members l8, l9 and 20. The plow I6 is illustrated in phantom in T Figure 2. .-Said plows are of the hinged moldboard type having moldboards 2|, 22 and 23 vertically hinged to saidplows by any suitable means known to the art. To the back of the moldboards 7 2|, 22 and 23 U-shaped brackets are secured like the bracket 25 shown on the moldboard 22. The

to one side of the vehicle. An operating lever 31,

arm 36 causing the shaft 3| to rotate andithe arm 33 to swing, thereby moving the fork 30 and causingthe moldboards 2 U22 and 23 to swing to-.

gether abouttheir respective hinges. When the plows are in. operation, these movements of the moldboards are against the pressure of the soil being plowed.

The lever 31 is operated forward from the seat of the driver on the tractor M by meanspfa'.

cable'or rope 39. This cable or rope is provided with knots 40 to set against the notch 4| of a support 42 so as to hold the moldboards in 'different positions against the pressure of the soil be ing plowed. Releasing the rope 39 allows the pressure of the soil to swing the moldboards in the opposite direction.

eluding an operating lever for actuating said arm, and means for holding said operating lever in dif- Having thus described our invention, we claim: In combination with a vehicle and a plurality of plows supported on the vehicle, said plows hav-- ing moldboards hinged thereto, arigid fork hav ing arms pivoted to the back of said moldboards for co-movement, an arm for moving saidfork so as to swing said moldboards against soilpressure whenthe plows are in operation; a mechanism in ferent positions against the actionof soil pressures on said moldboards.

GLENlVI. I- lORNER.

LOY M. NAFFZIGER. 

